(19)

(11)

EP 3 491 769 A1

(12)

(43) Date of publication: 05.06.2019 Bulletin 2019/23 (21) Application number: 17755257.7 (22) Date of filing: 01.08.2017

(51) International Patent Classification (IPC):  H04L 5/00(2006.01) H04W 72/12(2009.01) H04W 72/04(2009.01) H04W 72/10(2009.01) (86) International application number: PCT/IB2017/054707 (87) International publication number: WO 2018/025185 (08.02.2018 Gazette 2018/06)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 01.08.2016 US 201662369241 P (71) Applicant: Nokia Technologies Oy 02610 Espoo (FI)	(72) Inventors: PAJUKOSKI, Kari P. 90240 Oulu (FI) TIIROLA, Esa T. 90450 Kempele (FI) HAKOLA, Sami-Jukka 90450 Kempele (FI) LAHETKANGAS, Eeva 90900 Kiiminki (FI) (74) Representative: Nokia EPO representatives  Nokia Technologies Oy Karaportti 3 02610 Espoo 02610 Espoo (FI)